1. Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
2. Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS), Université du Québec, Laval, Québec H7V 1B7, Canada
3. Center for Vaccines and Immunology, University of Georgia, Athens, Georgia 30605, United States
4. Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Emory University School of Medicine, Athens, Georgia 30322, United States